Spring bed



Nov. 27 1923.

A. R. MASTERS SPRING BED Filed Feb. 4. 1922 4 M i w y i 1 3 y .4 a M 8til Patented Nov. 27, 1923.

ire stares ARTHUR n. MASTERS, or no se, IDAHO.

SPRING BED.

Application filed. February 4, 1922. Serial No. 534,044.

T 0 all whom it may concern:

Be it known that I, ARTHUR B. MASTERS, a citizen of the United States ofAmerica, residing at Boise city, in the county of Ada and State ofIdaho, have invented certain new and useful Improvements in Spring Beds,of which the following is a specification.

This invention relates to means for effecting resilient tensioning ofthe web or fabric of a spring bed'bottom, and more especially to thattype of webs or fabric which are connected by a plurality of coiled endsprings with the respective cross rails of the bed bottom, an example ofwhich forms the subject matter of my prior Letters Patent No. 1,253,858,dated Jan. 15, 1918. The present improvement has for its object:

To provide a structural formation and association of the parts of theadjusting 7 means whereby the desired degree of tensioning of the bedbottom web or fabric isattained in an effective and accurate manner, andwith which a supplementary or independent resilient action in theadjusting means is provided, with the main portion of the mechanismenclosed from view, from accumulations of dirt and from accidentalinjury, all as will hereinafter more fully appear.

I11 the accompanying drawing Fig. 1 is a side elevation of a bed bottomillustrating the general arrangement of parts in the presentimprovement.

Fig. 2, is an enlarged detail sectional elevation of a cross rail,adjusting means and accessories at one end of the structure.

Fig. 3, is a similar view of the opposite end of the structin'e.

Fig. 1, is a detail transverse section on line 4+4: Fig. 2.

Like reference numerals parts in the different views.

Referring to the drawing, 1 designates one of the usual spacedlongitudinal side rails of the bed bottom, carrying at its respectiveends angle brackets 2 and 3, to which are secured in manner hereinafterdescribed the end cross rails 4 and 5 of the bed bottom. The rails 4 and5 are adapted for end connections with the web or fabric 6 of the bedbottom and preferably in a resilient manner by plurality of coiledsprings 7 as shown in Fig. l.

indicate like In the preferred form of the invention the cross rail & isrigidly attached to its .brack-- ets 2, while the companion cross rail 5is adjustably connected to its brackets 3 by a construction of parts asfollows:

8 designates one of a pair of downwardly extending end arms or leversfixedly at tached at their upper ends to the cross rail 5 and pivotallyconnected at their midlength to the upper ends of the angle brack-' ets3 aforesaid.

9 designates a coiled sprin arranged in the interior of eachlongitudinal side rail 1 near the end of the same, and having endabutment against the end web of the angle bracket 3 as shown.

10 designates a screw shaft arranged centrally in the bore of saidlongitudinal rail 1 and spring 9, and having at its outer end a wingedhead or button 11 by which convenient manual rotation of the shaft isattained in an adjustment of the parts, and to such end the outerportion of the shaft 10 passes loosely through an orifice in the lowerend of depending arm or lever 8 aforesaid, with said head 11 havingbearing against said arm or lever as shown.

12 designates a travelling nut or head, having screw threaded engagementwith the inner end of the screw shaft 10 and bearing engagement againstthe inner end of the coiled spring 9, and in the preferred constructionshown the tendency of the nut 12 to turn with the shaft 10 is preventedby an engagement of one end of said spring 9 with an orifice in the nut12, and a corresponding engagement of the other end of the spring withthe end web of the angle .bracket 3 as illustrated more particularly inFig. 2.

With the abovedescribed construction and arrangement of parts aneffective andsubstantial adjustment of the parts is attained, with therequired. tensioning of the bed bottom fabric or web 6, and at the sametime the main portions of the adjusting means are protected frominjury,dirt accumulation and the like.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is

In a bed bottom structure, the combination of a tubular longitudinalside rail, angle brackets on the ends of the same, end cross railssupported by said brackets, a.

fabric attached to said cross rails, and an adjustable connectionbetween one of said cross rails and its angle bracket, the samecomprising a fixed depending arm on said cross rail having pivotalconnection at its midlength to said angle bracket and formed with anenlarged orifice in its lower end, an adjusting screw shaft passingthrough the enlarged orifice in the lower end of said arm, a screwthreaded nut arranged in the tubular end of the aforesaid longitudinalside rail and having operative engagement res/awe with the inner end ofsaid shaft, and a coiled spring arranged intermediate of said. nut andthe end web of the angle brackets on said longitudinal side rail, saidspring encircling said shaft and having its ends inserted in said weband said nut respectively whereby said nut is hindered from turning assaid shaft is rotated Signed at Chicago, Illinois this 1st day ofFebruary A. ll, 1922.

ARTHUR R. MASTERS.

